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Q. A 626g sample of water at 90 degrees is mixed with 441g of water at 30 degrees. What is the final temp of the mixture? Presume not heat is lost to the surroundings.
Q. An 54 N box of clothes is pulled 7.40 m up a 30° ramp by a force of 99N that points along the ramp. If the coefficient of kinetic friction between box and ramp is 0.22, compute the change in the box's kinetic energy.
Recognize and sketch all the external forces acting on the chair. Because the chair can be represented as a point particle of mass, draw the forces with their tails centered on the black dot in the middle of chair. Be certain to draw the forces so th..
What is the magnitude of the auto's average acceleration.
find friction force that acts on the bear.
A 69N box of clothes is pulled 8.9 m up a 30° ramp by a force of 100 N that points along the ramp. If the coefficient of kinetic friction between the box and ramp is 0.22, compute the change in the box's kinetic energy.
A certain freely falling object requires 1.7s to travel the last 37m before it hits the ground. From what height above ground did it fall.
A professor walks in a long hall carrying a vibrating 512Hz tuning fork. The end of the hall is closed so that sound reflects from it. The student hears 4 beats per second. How fast is the student walking and in what direction.
Find out the constant force that must be exerted on him to bring him to rest in a distance of 1.2 m in a time interval of 0.20 s.opposite the fullback's direction of motion.
Two crates, of mass 75 kg and 105 kg, are in contact and at rest on a horizontal surface. A 732 N force is exerted on the 75.00 kg crate.
Find the mans rate of sweat production
W hat is the velocity of the gasoline in the tube
A merry-go-round starts from rest and accelerates uniformly over 23.5 s to the final angular velocity of 6.55 rev/min.
A 48.21 {rm kg} ice skater spins about the vertical axis through her body with her arms horizontally outstretched, making 2.20 turns each second. The distance from one hand to the other is 1.5 {rm m}. Biometric measurements indicate that each hand na..
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